Yeah pretty much anything will do...
So long as parts are plentiful and cheap
Ie you will need to have spare suspension arms, wheels, radiators etc
Also, need to be friendly with a local panel guy
But would be a brilliant way to learn how to maintain a car.
I had a Cordia a Mate and I were going to rally...unfortunately it had too much rust and both of us lacked the time to do anything with it.